serious–mindedness

a mental state free of jesting or trifling she approached the task with her usual serious-mindedness Synonyms earnest, graveness, gravity, intentness, serious-mindedness, seriousness, soberness, sobriety, solemnity, solemnness, staidnessRelated Words gravitas, humorlessness; decisiveness, deliberation, determination, firmness, purposefulness, resoluteness, resolve; absorption, attentiveness, concentration, engrossment, enthrallment, immersion, intensityNear Antonyms lightness, shallowness, superficiality; dalliance, dilettantism; cheerfulness, gaiety (also gayety), glee, high-spiritedness, merriment, mirthAntonyms facetiousness, flightiness, flippancy, frivolity, frivolousness, levity, lightheartedness, lightness, play, unseriousness